| 摘要 |
The invention relates to a method for monitoring for a rupture in a storage element of a fuel tank system, wherein the fuel tank system has a fuel tank, and the storage element is designed to store hydrocarbons temporarily, wherein the fuel tank and the storage element are connected to one another in such a way that hydrocarbons which outgas from a fuel in the fuel tank are stored in the storage element, wherein the storage element is connected to a first line through which fresh air can be fed to the storage element, and the storage element is connected to a second line which connects the storage element to an intake line and through which fresh air which has been enriched with hydrocarbons can be fed from the storage element to the intake line, wherein a mass flow sensor and an air pump are arranged in the first line, upstream of the storage element in the direction of the flow of fresh air, and a second valve is arranged in the second line between the storage element and the intake line. In order to specify a reliable and cost-effective method with which a rupture in a storage element can be detected during the operation of the motor vehicle, a rupture is detected in the storage element if the mass flow sensor senses a change in the thermal conductivity of the non-moved air mass in the first line when the second valve is closed and/or when the air pump is stationary. |
